180 Units from 39 Regular arena (not UC).So basically 45 units per set of 10, which is 3 “hits” of the lower (more common) pull of 15 units each, out of 10 crystals average.That's actually above normal.(if you compared that to 39 UC crystals, then yes 180 would be low, but that's not the case) And if you ever got 180 units from just 10 Regular's then you’re basically hitting units on each and every one of those 10 crystals, or combinations of also hitting the higher jackpot 45 amount from some of them, quite unluckily)
It's 4.5 units per crystal. The average is about 3.7. So thats good